Why is a progressive income tax preferable to afloat income tax?

A progressive income tax is preferable to a flat income tax because it ensures that individuals contribute to government revenue in proportion to their ability to pay. This system helps reduce income inequality by placing a heavier tax burden on higher earners, allowing for greater public investment in social services and infrastructure that benefit society as a whole. Additionally, progressive taxation can stabilize the economy by adjusting tax rates based on economic conditions, providing relief during downturns and supporting growth during expansions.